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<p>[QUOTE=&quot;-jeffB, post: 2902904, member: 27832&quot;]Not really, unfortunately.</p><p><br /></p><p>When the coin tones, sulfur grabs onto those surface silver atoms, <i>disrupting</i> some of their bonds with their neighbors. When you reduce that silver sulfide, those silver atoms don&#039;t go back to their original positions -- in fact, they may not go back onto the coin at all.</p><p><br /></p><p>You may not be able to see the surface changes at first, but they&#039;re there, and if the toning was deep enough or you dip/zap too long, you <i>will</i> see changes. The first hint is a drop in luster, because the microscopic ridges and furrows that cause it aren&#039;t that many atoms high; removing enough layers of silver atoms changes the topography enough to produce a visible effect.[/QUOTE]</p><p><br /></p>

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